Hobbies And Interests
Harmless Spiders
Most spiders are harmless to humans, although all are venomous. That is, not all kinds of spider venom are life-threatening. Nevertheless, caution must be taken when encountering one, as spiders often bite whenever they feel threatened. The brightly-colored orb weavers are a family of harmless web-spinners. Their relative, the golden silk orb weaver, is a large spider whose diet may include small birds and bats as well as insects. Argiope spiders, being vulnerable to frosts, are common in sunnier states. Other harmless species include the common house spider, the large nursery web spider, the daddy long legs, and the non-spinning trapdoor, fishing, jumping and camel spiders.
Potentially Dangerous Spiders
Some spider bites are particularly painful and dangerous if left untreated. Hobo or funnel-web spiders are the only potentially dangerous web-builders in the US. They live in or around houses, although they normally avoid contact with humans. The tarantula, another potentially dangerous spider, is kept a a pet because it requires little space and daily maintenance. Other potentially dangerous hunting spiders found in the US are the solitary wolf spider and the glossy mouse spider.
Dangerous Spiders
Among the many spider species in the US, only a handful pose a real threat to humans. Perhaps the most well-known among these is the black widow, easily identifiable by the red hourglass shape on its underbelly. The most venomous North American spider, the black widow secretes venom that causes labored breathing, spasms, and potentially death if left untreated. Its close relative, the brown widow, produces venom twice as potent but does not inject as much venom when biting and is therefore less dangerous. The brown recluse, or violin spider, is another dangerous species with a distinctive marking of a violin shape on its upper abdomen. Its bite is not immediately painful but can cause blistering, necrosis and, in extreme cases, organ damage and death. Other dangerous species include the broad-faced and yellow-sac spiders as well as the Brazilian wandering spider.
Treatment for Spider Bites
The effect of spider venom on people varies. The first thing to do when bitten is to identify its species. If possible, trap the spider and bring it with you to the hospital. Wash the area with soap and water and slow the spread of the venom by elevating the bite site. Applying a cold pack also helps. Do not hesitate to seek medical attention, as some bites may require professional treatment. Spider bites are rarely lethal when given proper treatment.